May 2024
Intermediate to advanced
366 pages
7h 58m
English
Content preview from Certified Kubernetes Application Developer (CKAD) Study Guide, 2nd Edition
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 2. Kubernetes in a Nutshell
It’s helpful to get a quick rundown of what Kubernetes is and how it works if you are new to the space. Many tutorials and 101 courses are available on the web, but I would like to summarize the most important background information and concepts in this chapter. In the course of this book, we’ll reference cluster node components, so feel free to come back to this information at any time.
What Is Kubernetes?
To understand what Kubernetes is, first let’s define microservices and containers.
Microservice architectures call for developing and executing pieces of the application stack as individual services, and those services have to communicate with one another. If you decide to operate those services in containers, you will need to manage a lot of them while at the same time thinking about cross-cutting concerns like scalability, security, persistence, and load balancing.
Tools like buildkit and Podman package software artifacts into a container image. Container runtime engines like Docker Engine and containerd use the image to run a container. This works great on developer machines for testing purposes or for ad-hoc executions, e.g., as part of a Continuous Integration pipeline. For more information on containers, refer to Chapter 4.
Kubernetes is a container orchestration tool that helps with operating hundreds or even thousands of containers on physical machines, virtual machines, or in the cloud. Kubernetes can also fulfill those cross-cutting ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.